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Finding the Fourth Proportional to 8,987.76, 12,373.16 and 6,745.88

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Solution

The fourth proportional to 8,987.76, 12,373.16 and 6,745.88 is: 9,286.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.76 : 12,373.16 = 6,745.88 : x
  2. Step 2: Convert to fraction form
    8,987.76/12,373.16 = 6,745.88/x
  3. Step 3: Cross multiply
    8,987.76x = 12,373.16 × 6,745.88
  4. Step 4: Simplify right side
    8,987.76x = 83,467,849.78
  5. Step 5: Solve for x
    x = 83,467,849.78/8,987.76
  6. Step 6: Final answer
    x = 9,286.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.